5.5

CVE-2021-47289

ACPI: fix NULL pointer dereference

In the Linux kernel, the following vulnerability has been resolved:

ACPI: fix NULL pointer dereference

Commit 71f642833284 ("ACPI: utils: Fix reference counting in
for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer
that was possibly NULL.  That fails miserably, because that helper
inline function is not set up to handle that case.

Just make acpi_dev_put() silently accept a NULL pointer, rather than
calling down to put_device() with an invalid offset off that NULL
pointer.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 5.4.139
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.57
Linux ≫ Linux Kernel Version >= 5.11 < 5.13.6
Linux ≫ Linux Kernel Version5.14 Updaterc1
Linux ≫ Linux Kernel Version5.14 Updaterc2
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.24% 0.142
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e
Patch
https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc
Patch
https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4
Patch
https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4
Patch